component

LTL431ALT1G

Public Made by Adom

by adom

LRC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ltl431alt1g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
ltl431alt1g-etched.fit.json ltl431alt1g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ltl431alt1g-etched.glb ltl431alt1g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ltl431alt1g-etched.step ltl431alt1g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ltl431alt1g.glb Publish 0.1.0 · Ray
ltl431alt1g.kicad_mod Publish 0.1.0 · Ray
ltl431alt1g.kicad_sym Publish 0.1.0 · Ray
ltl431alt1g.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
ltl431alt1g.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json ltl431alt1g: specified limits as data (metadata.characteristics, 3 rows from the datasheet) · Ray
README.md ltl431alt1g: specified limits as data (metadata.characteristics, 3 rows from the datasheet) · Ray

LTL431ALT1G

LRC · Voltage Reference · SOT-23

LTL431ALT1G from LRC, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CATHODE passive Cathode (K) of the shunt reference. Sinks the regulation current; Vka may range from Vref (~2.5 V) up to 36 V max with cathode current 1 mA to 100 mA (absolute max -100 to +150 mA).
2 REF input Reference input (R). High-impedance sense input to the internal error amplifier; regulates when V(REF) = Vref (~2.495 V typ). Typical bias current 1.5 uA (max 4 uA).
3 ANODE passive Anode (A) of the shunt reference. Common return terminal for cathode and reference currents; typically tied to circuit ground in shunt-regulator applications.

Key specifications

Parameter Value
Manufacturer LRC
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LTL431ALT1G
  • LTL431BLT1G
  • LTL431APLT1G
  • LTL431BPLT1G
  • LTL431ATLT1G
  • LTL431BTLT1G
  • LTL431APTLT1G
  • LTL431BPTLT1G

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reference input voltage (grade 0.5%, LTL431ALT1) VREF 2.487 2.512 V VKA=VREF 2
Operating ambient temperature TOPR 0 70 °C 2
Off-state cathode current IKA(OFF) 1 µA VKA=36V, VREF=0 2

CAD (KiCad official)

  • Symbol: LTL431ALT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ltl431alt1g-etched.step / ltl431alt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltl431alt1g.step / ltl431alt1g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ltl431alt1g.step 59 KB You want the bare part, or you mark your own boards.
ltl431alt1g-etched.step 1.3 MB You want the part with LTL431ALT1G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 346 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: LRC datasheet (5 pp, sha256 8d4aaa62f4bc7d35, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF